[INFO] cloning repository https://github.com/wmiller848/rust_tcp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wmiller848/rust_tcp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwmiller848%2Frust_tcp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwmiller848%2Frust_tcp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cb4f5dd8e48ac806da9db21361625a43dfb6c785
[INFO] testing wmiller848/rust_tcp against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwmiller848%2Frust_tcp" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wmiller848/rust_tcp on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wmiller848/rust_tcp
[INFO] finished tweaking git repo https://github.com/wmiller848/rust_tcp
[INFO] tweaked toml for git repo https://github.com/wmiller848/rust_tcp written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/wmiller848/rust_tcp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9795b7472c089203c77097ee081531ef1efa31a9df13231cf9485f054c327d2a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9795b7472c089203c77097ee081531ef1efa31a9df13231cf9485f054c327d2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9795b7472c089203c77097ee081531ef1efa31a9df13231cf9485f054c327d2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9795b7472c089203c77097ee081531ef1efa31a9df13231cf9485f054c327d2a", kill_on_drop: false }`
[INFO] [stdout] 9795b7472c089203c77097ee081531ef1efa31a9df13231cf9485f054c327d2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3b63b0766a22b3d79de10907d3694badcb286ab4e0d3a584d7e75adebaae762
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a3b63b0766a22b3d79de10907d3694badcb286ab4e0d3a584d7e75adebaae762", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rustc-serialize v0.3.15
[INFO] [stderr]    Compiling byteorder v0.3.10
[INFO] [stdout] error[E0642]: patterns aren't allowed in functions without bodies
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.15/src/serialize.rs:145:45
[INFO] [stdout]     |
[INFO] [stdout] 145 | ...                   &f_name: &str,
[INFO] [stdout]     |                       ^^^^^^^ pattern not allowed in function without body
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Self` cannot be known at compilation time
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.15/src/serialize.rs:201:41
[INFO] [stdout]     |
[INFO] [stdout] 201 |     fn decode<D: Decoder>(d: &mut D) -> Result<Self, D::Error>;
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |
[INFO] [stdout] help: consider further restricting `Self`
[INFO] [stdout]     |
[INFO] [stdout] 201 |     fn decode<D: Decoder>(d: &mut D) -> Result<Self, D::Error> where Self: Sized;
[INFO] [stdout]     |                                                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0642.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "a3b63b0766a22b3d79de10907d3694badcb286ab4e0d3a584d7e75adebaae762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3b63b0766a22b3d79de10907d3694badcb286ab4e0d3a584d7e75adebaae762", kill_on_drop: false }`
[INFO] [stdout] a3b63b0766a22b3d79de10907d3694badcb286ab4e0d3a584d7e75adebaae762